NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-11
Page
20
Code
01
REVISION 31
RADIO PAGE
1 - PRESET FREQUENCY MEMORY LOCATION (ONLY FOR NAV
AND COM WINDOWS)
− Identifies the preset frequency as temporary (TEMP label) or
retrieved from the memory (MEMORY label followed by its
memory location).
− Colors:
− Cyan for on-side operation.
− Yellow for cross-side operation.
− When marked by the yellow cursor box, the memory location
labels and their associated stored frequencies can be scrolled
by using the Frequency Tuning Knobs.
2 - COM WINDOW/CONTROL SIDE IDENTIFICATION
− Identifies the window and which source equipment (side 1 or 2)
is active in that RMU.
− Colors:
− White for on-side source.
− Magenta for cross-side source.
3 - VHF COM ACTIVE FREQUENCY
− Indicates the active frequency for that window.
− Colors:
− White for on-side operation.
− Yellow for cross-side operation.
− Digits are replaced by dashes in case of any failure in the
associated source.
4 - VHF COM PRESET FREQUENCY
− Indicates the preset frequency.
− Colors:
− Cyan for on-side operation.
− Yellow for cross-side operation.
NOTE: When DME Hold is not selected, the NAV Window also
presents a similar preset frequency field.
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